A routeing measure comprising a designated area between the landward boundary of a traffic separation scheme and the adjacent coast, to be used in accordance with the provisions of the International Regulations for Preventing Collisions at Sea.

Any area of the intertidal or sub-tidal terrain, together with its overlying water and associated flora, fauna, historical and cultural features, which has been reserved by law or other effective means to protect part or all of the enclosed environment.

A zone separating the lanes in which ships are proceeding in opposite or nearly opposite directions; or separating traffic lanes designated for particular classes of ships proceeding in the same direction.

Turning basin

trnbsn

turning_basin

An area of water or enlargement of a channel used for turning vessels.

Two-way route part

TWRTPT

two-way_route

A two-way route part is an area of a two-way route within which traffic flow is generally along one bearing (and possibly its reciprocal).